Example: shipping books

## Loading required package: lattice
## 
## Attaching package: 'DAAG'
## 
## The following object is masked from 'package:openintro':
## 
##     possum
##   weight volume cover
## 1    800    885    hb
## 2    950   1016    hb
## 3   1050   1125    hb

Example: shipping books

qplot(x = volume, y = weight, data = allbacks)